Fluorescein angiography is used to demonstrate alterations in the retinal capillary bed in patients with loss of central vision secondary to x-ray irradiation of the orbital areas, unilateral internal carotid artery occlusion, scleroderma, and chronic inflammation of the vitreous.
Gass JDM. A Fluorescein Angiographic Study of Macular Dysfunction Secondary to Retinal Vascular DiseaseVI. X-Ray Irradiation, Carotid Artery Occlusion, Collagen Vascular Disease, and Vitritis. Arch Ophthalmol. 1968;80(5):606-617. doi:10.1001/archopht.1968.00980050608006